Traders run amok are often sentenced to pay restitution, in addition to serving jail time or forgoing any future dealings in the securities industry.  But few have been held responsible for an I.O.U. as large as the one a French court pinned on Jérôme Kerviel on Tuesday: $6.7 billion. That works out to the amount his rogue trades ultimately cost Société Générale, The New York Times’s Nicola Clark reports.  But how does it equate to other famous (or infamous) traders gone rogue through the years? It depends how you look at it, said William K. Black, a professor of ... (full story)